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Question

The boiling point of liquid increases by addition of impurities to it. 



A

True

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B

False

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Solution

The correct option is A

True


The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure.

The boiling point of a liquid can be increased by adding impurities in the liquid. This occurs because the presence of impurities decreases the number of molecules available to become vaporized during boiling. Impurities include salt, sugar, and other dissolving molecules. Generally, impurities increase the boiling point of a liquid.


Physics

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